Get notified: CD in/out (Views: 28)
Problem/Question/Abstract: Need to know when the user inserts/extracts a CD? Answer: there's a message you can intercept to know this: WM_DEVICECHANGE so... the rest is easy on the private section of your form, declare the function: Private { Private declarations } procedure WMDeviceChange(var Msg: TMessage); message WM_DEVICECHANGE; the implement it: procedure TForm1.WMDeviceChange(var Msg: TMessage); const CD_IN = $8000; CD_OUT = $8004; begin inherited; case Msg.wParam of CD_IN: ShowMessage('CD in'); //or do whatever you want!! CD_OUT: ShowMessage('CD out') end end; that's it... you'll receive a message when you put a CD in/out... try it then just instead of showing 'CD in'/'CD out'... do whatever you want |